(19)

(11)

EP 0 201 564 A1

(12)

(43) Date of publication: 20.11.1986 Bulletin 1986/47 (21) Application number: 85905725.0 (22) Date of filing: 08.11.1985

(51) International Patent Classification (IPC):  G06F 17/ 27( . ) H03M 7/ 30( . ) (86) International application number: PCT/US1985/002223 (87) International publication number: WO 1986/003039 (22.05.1986 Gazette 1986/11)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 08.11.1984 US 19840669562 (71) Applicant: DATRAN CORPORATION Pasadene, CA 91104 (US)	(72) Inventor: WINTHER, Dale, Eugene Tujunga, CA 91042 (US) (74) Representative: Enskat, Michael Antony Frank, et al  Saunders & Dolleymore 9, Rickmansworth Road Watford Hertfordshire WD1 7HE Watford Hertfordshire WD1 7HE (GB)